quickly bring into the field 20,000 soldiers, without those whom he could summon to his assistance from Pisa. While he surrounded himself with these forces and allies, it happened that Messer Matteo Visconti was attacked by the Guelphs of Piacenza, who had driven out the Ghibellines with the assistance of a Florentine army and the King Ruberto. Messer Matteo called upon Castruccio to invade the Florentines in their own territories, so that, being attacked at home, they should be compelled to draw their army out of Lombardy in order to defend themselves. Castruccio invaded the Valdamo, and seized Fucecchio and San Miniato, inflicting immense damage upon the country. Whereupon the Florentines recalled their army, which had scarcely reached Tuscany, when Castruccio was forced by other necessities to return to Lucca.
There resided in the city of Lucca the Poggio family, who were so powerful that they could not Cttily elevate Castruccio, but even advance him to the dignity of prince; and it appearing to them they had not received such rewards for their services as they deserved, they incited other famihes to rebel and to drive Castruccio out of Lucca. They found their opportunity one morning, and armmg themselves, they set upon the lieutenant whom Castruccio had left to maintain order and killed him. They
